Liquid-fuel pump.



G. D. PoGuE.

. LIQUID FUEL PUMP.

APPLICATIQN FILED mm1, 1916.

1,250,651. Eatente' Dee. 18519K;

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GEORGE D. POGUE, 0F ST. LOUIS, MISSOURL LIQUID-FUEL PUMP. i

Specification of Letters Patent.

" rarest-ee nec. is, ier a.

@riginal application led July 19, i915, Serial No. 40,678. Divided andthis application filed February il.,

1916. Seria1No.77,628.

To all whom z'L" may concern Be' it known that I, GEORGE D. Poeme, acitizen of the United States, residing at St. Louis, Missouri7 haveinvented la certain new and useful Improvement in Liquid Fuel Pumps, ofwhich the following is a full, clear, and exact description, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This application is a divisionof my copending application Serial No.40,678, filed July 19, 1915, for variable feed pumps.

The invention described in the present application consists in a liquidfuel pump 1n which the Valves are of a novel construction thatfacilitatestlie removal of saine and also enables the passageway betweenthe inlet and outlet valves to be drained Without removing the valves.

Figure l of the drawings is a transverse sectional View, illustratingone cylinder of the pump and the valves that coperate with saidcylinder.

Fig. 2 is a front elevational View, partly in vertical section, of thecylinder casting or body portion of the pump in which the cylinders areformed; and

Fig. 3 is a horizontal sectional View, taken on approximately the line3-3 or' Fig. 2.

.Referring to the drawings, which illnstrate the preferred form of myinvention, 22 designates the cylinder casting or bpdy portion of thepump in which the cylinders B Aare Jformed, the pump comprising,` threecylinders and three plungers A that reciprocate in said cylinders. Each.cylinder 'is provided with an inlet valve l and one or more dischargevalves 2 which are so designed that the valves of any cylinder can beremoved easily Withont cutting the other cylinders of' the pump ont ofoperation. Said valves are also-so constructed that the passagewaybetween the inlet and discharge valves of any cylinder can be drainedWithout removing the valves. ball type, are arranged in verticalalinement with each other, preferablyin front of. the cylinder B withwhich they coperate in e vertically-disposed hole or opening in themember 22. The upper end of the opening in .the member 22, in which theValves of one e linder are arranged, is closed by a removalile cap 2e,and the lower end of said opening is closed by e removable cap 25isybicli The valves l and 2, which are of carries a manually-operateclvalve 26. The inletl valve l is provided with a cage 1El that is screwedinto the member 22 and the discha rge valves 2 are both provided withseparate cages 2, the bottom one being seated in a pocket in the member22 and the top. one being screwed into the member 22.. The inlet anddischarge valves of all of the cylinders are arranged in transversealinenient with each edlen-preferably in front of the cylinders, and asupply pipe 27 leads to a channel 28 in the member 22 that is common toall of the cylinders, or, in' otherfwords, which supplies the fuel orother li uid being pumped to all of the cylinders. lli duct 29 leadsfrom each of the cylinders B to the passageway between the inlet anddischarge valves of said cylinder and at the lower end of said duct isa. rcmojvable closure 29a, as shown in Fig'. l, that enables said duct.and cylinder to be cleaned. Horizontallydis posed discharge ducts 28athat are formed 1n the member between the cylinders B, as shown in Fig.3, lead from the discharge valves of the respective cylinders todischarge pipes 28h. The manually-operated valve 26 previously mentionedis provided with a stem which is so constructed. that when vit isscrewed upwardly into the Dosition shown in Fig. l no fuel can pass fromthe channel 2S into the particular cylinder with which said valve 26coperates. The stem of said valve. 26 is provided at its upper end withan extension 26, shown in Fig. l, that unscnts the inlet. valve 1 ivhensaid Valve 26 is closed` and thus permits the contents of the passagewaybetween the inlet and discharge valves to escape through a duct/26" thatis 4formed in the stein of said valve, the Valve 2G being provided witha pet cock or other suitable device 26, that controls the duct in thestem of the valve. lf it is desired to examine or clean the valves of acertain cylinder, this can be accomplished Witl1- out cutting the othercylinders ont of operation by merely closingthe valve 26, so as to cutolithe supply of fuel to that particolar cylinder, and if it is desiredto drain the passageway between the inlet and discharge valves of acertain cylinder Without removing said valves, thisV can be, effected bymerely closing the yalve 26 and .opening` the pet cock 26 at the lowerend of y said valves-,- so as to permit the contents of said naissancmy;man; vez: n

'L vmr'ymg diameter extending den? @ugh said body portion, :u1 inletvalve 521'? opening, a phuaty of discharge fzve plovided Wigh sages ofdifferent di Qefia hft am arranged, in :swirl opening,

im m "QS an@ ,d "he nhe?, :1nd insurers for the ope., l @site @nsw saidopn'ng,

Wyse have A punge pump provided. with an n- Vzfdm a c'u "f Y@ 51discharge vak/3 that operate e cymaumatically when the pump is in use,im

wf 'the pump Cylinder, Saud valve Opening;

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supjlj/ @mammal in Suf imemlm' mon m all of Saud vulve @penrub uigg's,und (lschmgs @mets m sind mambo;-

vix'cs, Cutting and l'

